Repair link



May 10, 1938. BARNES 2,116,875

' REPAIR LINK Filed Oct. 28, 1935 2 Sheets-Sheet l ii" I Z4 May 10, 1 938. B. E. BARNES- REPAIR LINK Filed Oct. 28, 1955 2 Sheets-Sheet 2 its Patented May 10, 1938 UNITEbfsrAT ES.

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Brown E. Barnes, Portland; Oregt; assignortto Electric Steel Foundry: .Oompany, .lortland Oreg.

Application October 28, 1935, Serial No. 47,086

1 Claim.

This invention relates generally to chains, and particularly to a repair link therefor.

The main object of this invention is the construction of a repair link which can be easily inserted into a chain as a replacement part in a minimum amount of time and with the use of ordinary tools.

The second object is the construction of a repair link which will not detract from the flexibility of a chain.

The third object is the construction of a repair link which will not present objectionable projections when assembled.

The fourth object is the construction of a repair link in which the fastening rivets will not be placed under stress and that the link will not be objectionably affected by wear more than an ordinary solid link would be.

I accomplish these and other objects in the manner set forth in the following specification as illustrated in the accompanying drawings, in which:

Fig. 1 is a side elevation of one form of the link showing a part broken away in section.

Fig. 2 is an edge elevation of a link showing a fragment of an adjacent link and showing the fastening means.

Fig. 3 is also an edge elevation taken from the opposite side of the link and showing the closure.

Fig. 4 is a section taken along the line 4-4 in Fig. 1.

Fig. 5 is a section taken along the line 5-5 in Fig. 1.

Fig. 6 is a fragmentary View showing a modified fastening means.

Fig. 7 is a side elevation of a modified form of the link with a part broken away in section.

Fig. 8 is an edge elevation of the link shown in Fig. 7.

Fig. 9 is a section taken along the line 99 in Fig. '7.

Fig. 10 is a view similar to Fig. 9 but showing a modified form of fastener.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawings, there is shown in Figs. 1 to 6 a link having a closed side i I and the backwardly turned ends I2 whose tips l3 are sufiiciently far apart to easily admit a standard link l4. Each tip I3 is provided with a straight outer side l5 from which projects outwardly a lug IS. The straight sides |5 are provided with shields I! at their outer end to prevent material from wedging between the straight sides I5 and the connection part about to be de scribed.

The side H is provided with an opening l8 into which extends the shank l9 of the T-bar 20, whose upper end 2| constitutes the closure for the open side of the link. The tips 22 of the end 2| are rounded to conform with the contour of the link. The tips 22 are provided with slots 23 to receive the lugs I6. A rivet 24 extends through the side H and through the opening 25 in the T-bar 20. In the form of the device shown in Fig. 6, instead of employing a rivet 24, the slot 26 has its sides 21 flared and the T-bar 28 is split to form the two points 29 which are spread against the sides 21.

In the form of the device shown in Fig. 7, the link has one closed side 30 and the two inturned ends 3|, whose tips 32 are spaced to receive a gate 33 whose end 34 constitutes the closure side of the link. The tips 35 of the end 34 are provided with slots 36 to receive the shanks 31 of the inturned ends 3|. The shanks 3'! may be tackwelded or riveted as desired.

It will be noted that in this form of the device, the gate 33 is not tied to the side 3| as in the first described form of the device, dependence being placed upon the welding or riveting of the shanks 31 within the slots 36.

In the form of the device shown in Fig. 10, the fastening is made by spreading the shank 38 into a correspondingly flared opening 39, the shank 38 being a part of the inturned end 3|-A, and the opening 39 being formed in the tips 35-A.

It can be seen that in the use of this device for the purpose of replacing a broken link in a chain, it is only necessary to insert the two links 4 and then put the T-bar 20 in position, as shown in Fig. 1, and then drive the rivet 24. It follows that any strain on the chain will place the member 2| in tension and the only function of the rivet 24 is to prevent the T-bar 20 from leaving its position. Under ordinary conditions the link ends l2 are sufiicient to carry the load, and any excess load will simply place the member 2| in tension.

In the form of the device shown in Fig. 7, the same condition exists except that the welding or riveting on the shanks 31 takes the place of the rivet 24 in the first described form of the device.

It is desirable to make the sides l5 somewhat inclined toward the opening between the tips I3, first to insure a tight fit at the tips 22 and second to offset any distortions which may arise during the casting process which frequently tends to bend the tips l3 outwardly.

It must be understood that numerous forms of repair links have been cqpstructed in the past, most of which however are. objectionable on account of their irregular shape as compared with the chained links themselves or that the repair link is weakened by placing the strains upon the rivets. I, therefore, am not claiming repair linkslugs projecting therefrom in parallelism with each other, said outer faces converging toward the opening between the tips, a closure for said opening consisting of a T-shaped member, the shank of which extends through the space between said tips into said slotted side, means for securing said shank to said slotted side, the underface of said T being substantially perpendicular to the axis of the shank and the outermost ends of said T being in engagement with the outer converging faces, the cross bar of said T-shaped member having openings formed therethrough on opposite sides of said shank in parallelism therewith, said openings being adapted to receive the lugs on said tips.

BROWN E. BARNES. 

